Mechanical mattress-tightener.



R. JOY.

MECHANICAL MATTRESS TIGHTENER.

APPLICATION FILED Nov. 29. 1915.

Lg?, Patented Apr. 10, 1917.

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WITNESSES: INVENTOR .ATTORNEYS MECHANICAL MATTRESS-TIGHTENER.

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Spectication of Letters Patent.

Patented Apr. 11G, 191?.

Application lcd November 29, 1915. Serial No. 63,976.

To all whom t may concern.'

Be it known that l, ldonnnr Jov, a citizen of the United States, residing in the city and county of San Francisco and State of California, have invented new and useful improvements in Mechanical Mattress',` Tighteners, of which the following is a specifica-tion.

My invention relates to an improved means for applying tension to spiral or horizontally disposed mattress springs, so that they may be kept with proper tension to carry the load imposed upon them.

lt consists in the combination with the bed-frame, of socketed portions in which the ends oi the side rails are fitted, and brackets detachably fitted to said socketed portions, one of said brackets being adapted to carry the angle iron cross-bar which eX- tends across the width of one end of the bed and the opposed bracket, which carries the opposite angle iron bar, having a screwthreaded chamber, which is guided and movable in a horizontal socket, and a screw by which it is moved.

It also comprises details of construction which will be more fully explained by reference to the accompanying drawings, in which Figure 1 is a side elevation, showing myv invention.

Fig. 2 is a sectional elevation, showing the attachment at one end of the bed.

Fig. 3 is a :fragmentary section of one of the adjustable brackets. Fig. 4 is a transverse section thereof.

The hed proper consists of posts A. These posts carry projecting sockets 2 which are adapted to receive the ends of the side rails 3 which are iitted into the sockets, as shown. The socket parts 2 may be preferably cast around the posts A at the proper point, in such a manner that when the rails 3 are entered into the sockets, the structure of the bed-frame will be complete.

Upon one end of a side rail 3 is bracket 4: which is suitably attached to the socket portion 2. in the present case I have shown this bracket as having a downwardly projecting lug 5 which is adapted to lit into a corresponding vertical socket in the part 2, which is here shown as being tapered, so that the parts lock firmly together and the bracket will be held in position. At the opposite end oi' cach side rail, is a tubular sleeve S, which has a correspondingly tapered lug 5L corresponding with the lug 5 of the opposite bracket and secured in like manner to the part 2. The bracket e in this case has a sleeve or tubular side extension 7 at the lower end which is adapted to be moved horizontally within the tubular member 6.

At the upper ends of the brackets ai and 4a are lugs 8 which are hook-shaped and are adapted to receive the correspondingly slotted ends of angle iron rails 9 and-9a which extend across each end of the hed and at such an elevation as to carry the mattress at a su'liicient height for practical use.

The mattress is represented at 10, and the horizontal portion of the angle iron bars 9 and 9 has holes made near its edge, with which tho curved or hook ends 11 of the mattress spring may be engaged. 12 is a screw adapted to enter the tubular me1nber 6, within which the end 'Ya of the bracket la is slidable. This portion 71l is tubular and screw-threaded in the interior to receive the screw 12 which has a head 18 by which it may be turned. The head 13 is turnable in contact with the closed end of the part 6 through which the screw passes.

lt will be seen by this construction that at one end of the bed are fixed brackets 4 which receive the angle iron mattress connection and hold this end stationary. At the other end the brackets la are horizontally slidable in a guide sleeve 6 and by means of the screws 12 may be moved to adjust the tension of the mattress to any desired degree.

In orderto insure these adjustments reinaining at any desired point, I have shown a series of countersinks or holes 14 made within the side of the sleeve, and a set-screw 15 which passes into any one of the countersinks to engage with the interior part 7 and thus hold it in the required position.

Various minor modifications may be made in the structure here described without changing the character of the invention.

Having thus described my invention, what I claim and desire to secure by Letters Patent isln a mechanical mattress fastener, a bed frame having side rails and end socket parts supported by the frame posts, brackets secured to the side rails and engaging with the socket parts, one of said brackets comprising a liXed section and an adjustable slide extension, the fixed section having a horizontally disposed sleeve part open at one end and closed at its opposite end which latter end extends beyond the body portion of the fixed section, the adjustable slide eX- tension having an elongated tubular bearing slidable in the sleeve part and removable therefrom by longitudinal movement only, a screw arranged in the closed end of the sleeve part and engaged in the tubular bearing for sliding the latter in the sleeve part, and a lug carried by the Xed section for engaging in the socket part of the lied frame and underlying the extended end ot the sleeve part.

In testimony whereof I have hereunto set 15 my hand in the presence of two subscribing Witnesses.

ROBERT JOY.

Witnesses:

JOHN H. HERRING, W. W. HEALEY.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

